The red and white pinwheel is actually the corner blocks for the Out On A String block that I had lots of trouble with. These were too small for my block so I had to make larger ones. But they are the exact size required for this pattern. For the patches part I continued the theme of red/white.
This block finishes at 9". The little pinwheel is a bonus for sewing across the diagonal twice and trimming the corner off. This block begins with 8 rectangles and 5 squares.
No odd shapes or triangles to cut.
These strips are cut 2.5" wide so this border could be made using pre-cut strip sets.
It finishes at 6" wide. I made this piece 6 x 12 as a sample.